Manually installing from the RPM packages

Install the rpmextract package, and extract both rpm packages using rpmextract.sh. Extracting both files will create a var and a usr directory - move the contents of both directories into the corresponding root directories.

Run the cups wrapper file in /usr/local/Brother/cupswrapper. This should automatically install and configure your brother printer.

For some of the drivers 32 bit libraries may need to be installed from multilib.

In response.xml you will find a <PATH> tag that contains the firmware download URL. Next, download the firmware, push it to the printer, and let the printer process it. Before that is done, change the Admin password to something known, it will be used as the user to log into the FTP site (VERY bad practice, don't do this).

Some Canon printers will use a similar setup to the iP4500, so consider modifying the cnijfilter-ip4500AUR package for other, similar printers.

CARPS

Some of Canon's printers use Canon's proprietary Canon Advanced Raster Printing System (CARPS) driver.
Rainbow Software have managed to reverse engineer the CARPS data format and have successfully created a CARPS CUPS driver, which is available as carps-cupsAUR.
The project's GitHub page includes a list of working printers.

USB over IP (BJNP)

Some Canon printers use Canon's proprietary USB over IP BJNP protocol to communicate over the network. There is a CUPS backend for this, which is available as cups-bjnpAUR.

cnijfilter

Some printers using the cnijfilter drivers support the cnijnet protocol. To find the printer URI run

$ cnijnetprn --search auto

and use the cnijnet:/ URI in the output.

This article or section needs expansion.

Reason: The URI appears to be of the form cnijnet:/ followed by the MAC address of the printer. If this is the case it would be good to mention it here. (Discuss in Talk:CUPS/Printer-specific problems#)

Both e515dwcupswrapper-3.2.0-1.i386.deb and e515dwlpr-3.2.0-1.i386.deb need to be installed. You could either write a PKGBUILD, use debtapAUR, or use dpkgAUR (using dpkg is not recommended as the files will not be managed by pacman). The driver works on both the x86_64 and i386 platforms, but may require multilib.

hplip depends on foomatic-db-engine which prevents the drivers list from appearing when a printer is added to CUPS via the web user interface (following error : "Unable to get list of printer drivers"). Possible workarounds:

Either: Install hplip first, then retrieve the PPD file that matches your printer from /usr/share/ppd/HP/. Next, remove hplip entirely as well as any unnecessary dependencies. Finally, install the printer manually using the CUPS web UI, selecting the PPD file you retrieved, and then re-install hplip. After a reboot, you should have a fully working printer.

Or: Remove hplip, foomatic-db and foomatic-db-engine along with any unnecessary dependencies. Reinstall hplip and restart CUPS. Install your printer using the CUPS web UI, which should now be able to find the drivers automatically. No reboot needed.

The drivers will need to be downloaded from Lexmark's website. Preferably, create a package (see Creating packages) and install it. Here is a basic PKGBUILD that still needs work but will give an idea of what is required.

Keep in mind you can use the automated installer but doing so will leave the resulting changes untracked. The PPD will be installed into /usr/local/lexmark/lxk08/etc/ or similar, depending on the printer model.

Oki

Ricoh

Install openprinting-ppds-pxlmono-ricohAUR if your device is black and white, or openprinting-ppds-pxlcolor-ricohAUR if it's color. Note that Ricoh copiers are sometimes branded as Savin, Gestetner, Lanier, Rex-Rotary, Nashuatec, and/or IKON. So, if you have a device bearing one of these brands, it may be supported by these drivers as well.

Custom drivers

Phaser 3100MFP

Warning: This section involves installing packages without pacman. These directions should ideally be automated with a PKGBUILD.

Once you have downloaded the drivers, execute the driver installer and accept the licence:

# cd printer
# ./XeroxPhaser3100.install

Note that the driver is 32 bit, so some 32 bit libraries will be required on an x86_64 system.

For the scanner, create an /etc/sane.d directory if it doesn't already exist, because it's need by the installer:

# mkdir -p /etc/sane.d

Now install the driver:

# cd scanner/
# ./XeroxPhaser3100sc.install

Again, on an x86_64 install, 32 bit libraries will be needed.

Phaser 6000B

Install the xerox-phaser-6010 package (archived from the AUR).
The driver may require older versions of nettle and gnutls to be installed, since the binary blob linked against older versions of the shared libraries provided by those packages. The oldest known-good versions are nettle-2.7.1-1 and gnutls-3.3.13-1.

Phaser 6125N

Warning: This section involves installing packages without pacman. These directions should ideally be automated with a PKGBUILD.

FujiXerox does not support Linux on this model. An old rpm is available but does not seem to work.

A slightly adapted custom driver has been found to work out of the box.